CA2512495A1 - Diversity system for measuring reception quality - Google Patents
Diversity system for measuring reception quality Download PDFInfo
- Publication number
- CA2512495A1 CA2512495A1 CA002512495A CA2512495A CA2512495A1 CA 2512495 A1 CA2512495 A1 CA 2512495A1 CA 002512495 A CA002512495 A CA 002512495A CA 2512495 A CA2512495 A CA 2512495A CA 2512495 A1 CA2512495 A1 CA 2512495A1
- Authority
- CA
- Canada
- Prior art keywords
- reception quality
- measurement system
- reception
- receiver
- indicator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
- H04B7/0817—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with multiple receivers and antenna path selection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/23—Indication means, e.g. displays, alarms, audible means
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/24—Monitoring; Testing of receivers with feedback of measurements to the transmitter
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
- H04B7/0805—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with single receiver and antenna switching
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Radio Transmission System (AREA)
Abstract
To assist an operator to position a wireless camera (CSF) so that a base station (SB) receives with good quality a radiofrequency signal (S) transmitted from a transmitter (EC) linked to the camera, several measurers (M1-MK) linked to diversity receivers (R1-RK) of the signal each determine whether a characteristic of the signal via the respective receiver satisfies a reception criterion (TH). In the base station, a counter (COM) counts the receivers satisfying the reception criterion, and a divider (DIV) establishes a reception quality indicator (QR) dependent on the number of satisfactory receivers so as in particular to retransmit it via a return channel (VR) to the camera so that it can be displayed thereon.
Claims (10)
1 - Measurement system for measuring the reception quality of a predetermined radiofrequency signal transmitted from a transmission means (EC) to several receiver means (R1-RK), characterized in that it comprises:
- several measurer means (M1-MK) respectively linked to the receiver means (R1-RK) each to determine whether a characteristic of the predetermined signal (S) received by the respective receiver means satisfies a predetermined reception criterion (TH), - a counting means (COM) to count a number of satisfactory receiver means in which the reception criterion is satisfied, and - an indicator means (DIV) to establish a reception quality indicator (QR) depending on.the number of satisfactory receiver means.
- several measurer means (M1-MK) respectively linked to the receiver means (R1-RK) each to determine whether a characteristic of the predetermined signal (S) received by the respective receiver means satisfies a predetermined reception criterion (TH), - a counting means (COM) to count a number of satisfactory receiver means in which the reception criterion is satisfied, and - an indicator means (DIV) to establish a reception quality indicator (QR) depending on.the number of satisfactory receiver means.
2 - Measurement system as in claim 1, in which the counting means (COM) and the indicator means (DIV) are included in a central measurement means (SB) linked to the receiver means (R1-RK).
3 - Measurement system as in claim 2, in which a display (ASB) of the measurement means displays the reception quality indicator (QR).
4 - Measurement system as in one of claims 1 to 3, in which the transmission means (EC) and the receiver means (R1-RK) operate in space diversity or in frequency diversity or in polarization diversity or in time diversity.
5 - Measurement system as in any of claims 1 to 4, comprising a return radio channel (VR) over which the reception quality indicator (QR) is transmitted via a transmitter means (ESB, AE) to a reception means (RC) linked to the transmission means (EC) in order to display thereon (AC, VC) the reception quality indicator (QR).
6 - Measurement system as in any of claims 1 to 5, comprising several cellular receiver means (RC1-RCQ) each including several measurer means, a counting means and an indicator means in order to establish and transmit respective reception quality indicators (QR1-QRQ) to the central measurement means (SBe).
7 - Measurement system as in claims 5 and 6, in which the reception quality indicators (QR1-QRQ) are retransmitted over the return radio channel (VR) from the transmitter means (ESB, AE) to the receiver means (RC).
8 - Measurement system as in claim 6 or 7, in which the reception quality indicators (QR1-QRQ) are displayed (ASB) in the base station.
9 - Measurement system as in claim 8, in which the reception quality indicators (QR1-QRQ) are displayed on a map respectively in correspondence with the locations of the cellular receiver means (RC1-RCQ) on the map.
10 - Measurement system as in any of claims 1 to 9, in which the transmission means (EC) is linked to a mobile wireless camera (CSF).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0300221 | 2003-01-10 | ||
FR0300221A FR2849970A1 (en) | 2003-01-10 | 2003-01-10 | DIVERSITY RECEPTION QUALITY MEASUREMENT SYSTEM |
PCT/EP2003/014734 WO2004064269A1 (en) | 2003-01-10 | 2003-12-22 | Diversity system for measuring reception quality |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2512495A1 true CA2512495A1 (en) | 2004-07-29 |
CA2512495C CA2512495C (en) | 2012-06-05 |
Family
ID=32524804
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2512495A Expired - Fee Related CA2512495C (en) | 2003-01-10 | 2003-12-22 | Diversity system for measuring reception quality |
Country Status (8)
Country | Link |
---|---|
US (1) | US7430429B2 (en) |
EP (1) | EP1582011B1 (en) |
JP (1) | JP4335815B2 (en) |
AT (1) | ATE538541T1 (en) |
AU (1) | AU2003293970A1 (en) |
CA (1) | CA2512495C (en) |
FR (1) | FR2849970A1 (en) |
WO (1) | WO2004064269A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4643462B2 (en) * | 2006-02-08 | 2011-03-02 | 株式会社東芝 | Radio and polarization switching method |
DK1885072T3 (en) * | 2006-08-03 | 2012-04-23 | Oticon As | Method and system for visual indication of the function of wireless receivers and a wireless receiver |
US10419139B2 (en) * | 2017-11-01 | 2019-09-17 | Ford Global Technologies, Llc | Vehicle camera signal strength indicator |
Family Cites Families (27)
Publication number | Priority date | Publication date | Assignee | Title |
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US4628321A (en) * | 1982-04-14 | 1986-12-09 | Harris Corporation | Aperture transformation sidelobe canceller |
GB2196211B (en) * | 1986-09-12 | 1990-07-04 | British Broadcasting Corp | Communications system |
US5263175A (en) * | 1990-09-28 | 1993-11-16 | Motorola, Inc. | Diversity repeater diagnostic method and apparatus |
JP3527791B2 (en) * | 1995-04-28 | 2004-05-17 | トヨタ自動車株式会社 | Malfunction antenna detection method and apparatus |
GB2307375A (en) * | 1995-11-20 | 1997-05-21 | British Broadcasting Corp | Mobile Radio Communication System with Diversity Reception |
CA2188845A1 (en) * | 1996-10-25 | 1998-04-25 | Stephen Ross Todd | Diversity Antenna Selection |
US5856809A (en) * | 1997-01-22 | 1999-01-05 | Texas Intruments Incorporated | Static antenna tuning and antenna voltage measurement |
US5940454A (en) * | 1997-12-17 | 1999-08-17 | Nortel Networks Corporation | Blind switch diversity control apparatus |
US6615024B1 (en) * | 1998-05-01 | 2003-09-02 | Arraycomm, Inc. | Method and apparatus for determining signatures for calibrating a communication station having an antenna array |
US6683567B2 (en) * | 2000-07-18 | 2004-01-27 | Brian De Champlain | Single receiver wireless tracking system |
JP3732364B2 (en) * | 1999-08-27 | 2006-01-05 | 松下電器産業株式会社 | Communication terminal apparatus and channel estimation method |
US6587686B1 (en) * | 1999-12-14 | 2003-07-01 | Telefonaktiebolaget L M Ericsson (Publ) | Method and apparatus for detecting base station transceivers malfunctions |
EP2139069B1 (en) * | 1999-12-15 | 2011-04-13 | Nippon Telegraph And Telephone Corporation | Adaptive array antenna transceiver apparatus |
DE10032426B4 (en) * | 2000-07-04 | 2006-01-12 | Siemens Ag | Beamforming method |
US7286489B2 (en) * | 2000-10-10 | 2007-10-23 | Intel Corporation | Communications meshes |
JP2002176666A (en) * | 2000-12-05 | 2002-06-21 | Sony Corp | Mobile communication system |
JP3543323B2 (en) * | 2001-02-14 | 2004-07-14 | 日本電気株式会社 | Base station transmission control method, cellular system and base station |
EP1253736A3 (en) * | 2001-04-26 | 2003-12-10 | NTT DoCoMo, Inc. | Data link transmission control for mobile communications |
JP4016647B2 (en) * | 2001-05-17 | 2007-12-05 | 日本電気株式会社 | Mobile communication system, base station, mobile station, threshold setting method used therefor, and program thereof |
US7203508B2 (en) * | 2001-06-13 | 2007-04-10 | Ntt Docomo, Inc. | Mobile communication systems, mobile communication methods, base stations, mobile stations, and signal transmission methods in the mobile communication systems |
JP2003078462A (en) * | 2001-08-31 | 2003-03-14 | Sanyo Electric Co Ltd | Radio equipment, its signal receiving method, its filter coefficient measuring method and filter coefficient measurement program thereof |
FR2829898A1 (en) * | 2001-09-17 | 2003-03-21 | Thomson Licensing Sa | WIRELESS VIDEO CAMERA |
US7277679B1 (en) * | 2001-09-28 | 2007-10-02 | Arraycomm, Llc | Method and apparatus to provide multiple-mode spatial processing to a terminal unit |
JP4012391B2 (en) * | 2001-10-30 | 2007-11-21 | 株式会社エヌ・ティ・ティ・ドコモ | Mobile station, mobile communication system, handover control method, handover control program, and recording medium |
US20030228857A1 (en) * | 2002-06-06 | 2003-12-11 | Hitachi, Ltd. | Optimum scan for fixed-wireless smart antennas |
EP1392004B1 (en) * | 2002-08-22 | 2009-01-21 | Interuniversitair Microelektronica Centrum Vzw | Method for multi-user MIMO transmission and apparatuses suited therefore |
EP1548960B1 (en) * | 2002-09-30 | 2015-07-29 | Fujitsu Limited | Transmission power control method and transmission power controller |
-
2003
- 2003-01-10 FR FR0300221A patent/FR2849970A1/en active Pending
- 2003-12-22 EP EP03789383A patent/EP1582011B1/en not_active Expired - Lifetime
- 2003-12-22 JP JP2004566019A patent/JP4335815B2/en not_active Expired - Fee Related
- 2003-12-22 AU AU2003293970A patent/AU2003293970A1/en not_active Abandoned
- 2003-12-22 WO PCT/EP2003/014734 patent/WO2004064269A1/en active Application Filing
- 2003-12-22 CA CA2512495A patent/CA2512495C/en not_active Expired - Fee Related
- 2003-12-22 US US10/541,784 patent/US7430429B2/en active Active
- 2003-12-22 AT AT03789383T patent/ATE538541T1/en active
Also Published As
Publication number | Publication date |
---|---|
ATE538541T1 (en) | 2012-01-15 |
CA2512495C (en) | 2012-06-05 |
JP2006524441A (en) | 2006-10-26 |
WO2004064269A1 (en) | 2004-07-29 |
EP1582011A1 (en) | 2005-10-05 |
AU2003293970A1 (en) | 2004-08-10 |
US7430429B2 (en) | 2008-09-30 |
FR2849970A1 (en) | 2004-07-16 |
US20060141936A1 (en) | 2006-06-29 |
EP1582011B1 (en) | 2011-12-21 |
JP4335815B2 (en) | 2009-09-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |
Effective date: 20201222 |